I've been getting tons of dust transactions to my wallet, 0.00000546BTC every month or so.
Is that dust transactions come from this address? : 1ViViGLEawN27xRzGrEhhYPQrZiTKvKLo
If that is the case I explain all few months ago, so you can follow advice you get in this thread, or maybe write to this company and ask them to stop sending free donations to your address.
https://bitcointalk.org/index.php?topic=5103542.0